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An Ergonomics Evaluation of Job Stress in a Typical Hot Industry

机译:典型热行业中工作压力的人机工程学评估

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Twenty-four workers, randomly selected from a forging plant, were studied to ascertain impact of occupational work-load on the physiological functions during some typical jobs comprising Ⅰ) LOADING Ⅱ) UNLOADING Ⅲ) HELPING and Ⅳ) FORGING, routinely performed in a Forge Shop. Environmental heat load was assessed through measurements of 'Ambient Air Temperature', 'Humidity', 'Wind Velocity', and 'Radiant heat'; the physiological demand was evaluated in terms of 'Energy Cost', 'Heart Rate' and 'Oral Temperature'. Findings reveal that the environmental heat load, expressed as CET, was quite severe (around 32.0℃) with intense thermal radiation. Extreme condition was observed 38.9℃, which is well above the permissible limit (i.e 29.5℃) for day to day industrial work. From the consideration of the energetic workload ranged from 3.5 to 6.0 koal min~(-1), the jobs could be graded 'Moderate' to 'Heavy' which could, however, be categorized 'Heavy' to 'Very Heavy', based on the circulatory stress. Discrepancies in the job-severity are due to superimposed effect of climatic stress coupled with physical workload. The oral temperature records also indicate alarming physiological response. It could, thus, be concluded that the workers on the forging tasks have to experience a considerable degree of occupational stress arising out of environmental heat load and physical activities, and hence the consequent undue strain in their day to day occupational work. Appropriate recommendations are suggested. Details are discussed in the paper.
机译:研究人员从锻造厂随机选择了二十四名工人,以确定职业工作量对一些典型工作的生理功能的影响,这些工作包括:Ⅰ)装载Ⅱ)卸载Ⅲ)帮助和Ⅳ)锻造,这些工作通常在锻造厂进行店。通过测量“环境温度”,“湿度”,“风速”和“辐射热”来评估环境热负荷;根据“能源成本”,“心率”和“口腔温度”评估生理需求。结果表明,环境热负荷以CET表示,在强烈的热辐射下相当严重(约32.0℃)。观察到极端条件为38.9℃,远高于日常工业工作的允许极限(即29.5℃)。考虑到精力充沛的工作量介于3.5到6.0 koal min〜(-1)之间,可以将这些工作分为“中等”到“沉重”,但可以将其分类为“沉重”到“非常沉重”循环压力。工作严重程度的差异是由于气候压力与物理工作量的叠加效应所致。口腔温度记录还表明令人震惊的生理反应。因此,可以得出结论,从事锻造任务的工人必须承受由于环境热负荷和体育锻炼而产生的相当大的职业压力,从而在日常的职业工作中造成不必要的压力。建议适当的建议。本文讨论了详细信息。

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